Sumitomo Plastics Machinery all electric plastic injection molding machines manufacturer

For clamping, Sumitomo Plastics Machinery’s SE-HY Series provides the high-performance combination of Sumitomo's all-electric technology with the company's field-proven, double-toggle clamp design for mold open/close operation that's remarkably fast, smooth, precise and energy efficient. The clamp unit's rigidity and durability, verified using finite element analysis methods, are your assurance of years of round-the-clock, trouble-free, high-speed molding.

The clamp unit features two, digitally controlled AC servo motors for clamp and ejection operation. Precision clamping is assured by full, closed-loop control of mold open/close velocity and position. As with the injection unit, belted motors with highly efficient power transmission and exceptionally durable belts are used.

A higher power motor for clamping delivers faster mold open/close speeds. The SE350HY, for example, has a 1260 mm/sec open/close speed. And, compared with competitors' hydromechanical clamp hybrid machines, the SE-HY achieves these fast speeds with significantly less power consumption.

To help molders tailor machine operation to specific mold requirements, the SE-HY provides three-stage mold open/close speed control. Additionally, selectable ramping modes (soft, standard or sharp) can be used to optimize clamp open and close profiles for fast cycles with shock-free movement.

Clamp and ejector operation are monitored by precise optical encoders for maximum mold protection and consistent molding cycles. An important factor for take-out robots and 3-plate molds, both machines provide mold open stop position accuracy of less than 20 microns. With low-pressure mold protection settable to 0.3 mm and digital setting of mold open/close positions to 0.1 mm, you're assured of precision mold protection and no banging-even at high speeds. And roller-type moving platen supports, a standard feature, offer high load-bearing capability.

Excellent clamp force linearity, from low to high tonnage, enables optimum setting of clamp force to suit parts with different projected areas. Optional multi-toggle clamp force control offers two modes: a high-cycle mode in which filling can begin during clamping; and a gas-release mode in which filling can begin during low-pressure clamping. This unique feature offers the benefits of a shorter cycle time and improved part quality.

For optimum life of the ball screws, toggle pins and tie bar bushings, the SE-HY is equipped with a highly reliable, automatic grease supply through a valve-type progressive distribution system. This system uses an externally mounted pump unit with easy-to-load grease cartridges that can be changed without interrupting machine operation.

Graphite-impregnated bushings, also field-proven on the SES and SG/SGM machines, significantly reduce toggle lubrication requirements. That means less maintenance, less grease use and fewer disposal problems. Other ease of maintenance features include: location of the pull-in cylinder under the injection unit, a swing-away control panel, selectable Auto Purge, and on-screen displays of the inspection guide, I/O check and maintenance log.

Please use the SE-HY Info buttons above at right to read more about SE-HY Series ultra-high-speed hybrid injection molding machines.